Exact(2)
A closed form expression for statistical distributions of fiber lifetimes was established, and was found to compare fairly well with the experimental results, which assessed the approach and validated new findings.
The authors pointed out that these values represent approximate fiber lifetimes and do not account for changes in the surface area with respect to time, or for preferential dissolution sites such as crystal defects or edges.
Similar(58)
A joint approach applying a fiber lifetime model and extensive bend loss tests reveals that lifetime and bend-loss limits start to coincide for short length optical fiber storage for a constant curvature radius below 15 mm.
Mercury amalgamation onto a Pd wire provided the best performance in respect to sensitivity and fiber lifetime, but Pd wires could not be implemented in the SPME device due to their poor mechanical characteristics.
Higher temperatures were not used to avoid high water vapor content in the headspace, which can shorten the PEG fiber lifetime.
The PCL/PDMS fiber's lifetime was determined by monitoring the change of extraction efficiencies obtained by performing repeated extractions under definite experimental conditions with a single fiber.
The new SPME fiber has a lifetime of over 500 extractions.
Quantitatively, the potential of lung burden analyses to assess lifetime mineral fiber exposure has yet to be achieved with confidence.
In related studies, the prevalence of pleural plaques was increased among workers in Marysville, Ohio, who had very low lifetime cumulative fiber exposures from processing Libby vermiculite; these pleural changes were also associated with spirometric decrements (Lockey et al. 1984; Rohs et al. 2008; Lockey et al. 2015).
Water-immersion mandrel wrap data for time to failure of up to ~ 1 year are analyzed to obtain allowable design stresses for 30 year lifetime for the fiber.
The target for the reliability of the submarine plant is that no more than one ship repair should be needed during that lifetime per two fiber pairs on a transatlantic cable.
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